Flier for spinning and twisting machines



Dec. 6, 1949 M. KOCSUTA E FLIER FOR SPINNING AND TWISTING MACHINES FiledFeb. 19, 1947 MICHAEL xoasum a moms s mmm INVENTORS BY MA ATTORNEYPatented Dec. 1949 UNITED STATES PATENT OFFICE FLIER FOR- SPINNING ANDTWISTING MACHINES tion of Ohio Application February 19, 1947, Serial No.729,476

3 Claims. (Cl. 57-116) This invention relates to fliers of the type usedin twisting and spinning machines.

Where a flier is used in the twisting of yarns of heavier denier it isdesirable to restrict its rotation during certain periods tosubstantially that of a spool if the yarn is to be kept from overrunninthe spool when the spool is stopped. The over-running of yarn usuallycauses corkscrews in the yarn and a backing up of twist to the point ofdeparture of the yarn from the spool. Should no attention be paid to theelimination of "corkscrews then such twisted-up yarn is apt to becarried right on to a collecting spool. Such defective yarn will, ofcourse, give rise to further difliculties in later processing steps.Also, should a. corkscrew occur below a flier eye then, on occasion, asit passes through the eye it is apt to be caught therein and breakeither the flier arm or the yarn. The above difficulties are ordinarilyovercome by a personal inspection of each spool position prior torestarting a machine; however, such a procedure consumes a substantialamount of productive time.

Various types of braking means for restricting the rotation of fliers atspool starting and stopping periods have been proposed, such as paddlespositioned opposite the flier eye arm to act as air brakes; orcentrifugally releasable braking devices which are adapted to hold andrelease a projection positioned on the lower portion of a flier body; ora resilient brake such as a spring type brake which is responsive tocertain speeds and which acts on the top of a spool to frictionally bindthe flier to the spool.

The mentioned braking devices have, generally, been found not to beadaptable in the spinning of a heavier denier yarn. This invention,advantageously, provides a flier for use with heavier denier yarns. Theflier has a braking device which operates continually throughout therotation of the spool and which is integrated in the flier bodyconstruction.

Generally, the flier comprises a central, oval shaped body portionadapted to hold a pair of oppositely positioned flier arms. The bodyportion has an aperture in which there is fixed a core or a sleeve. Thiscore or sleeve is rotatably supported by another sleeve. A compressionspring is positioned about thelatter sleeve to exert pressure againstone end of the sleeve and against one end of the core supporting theflier to frictionally restrain its rotation. The inner sleeve, i. e.,the sleeve on which the core is mounted, is adapted to be placed on thespindle, being frictionally bound thereto so as to rotate with the 2spindle. Thus the flier is substantially fixed to the spindle with theexception that it is permitted to rotate under certain circumstancesrelative to th spindle.

During rotation as the yarn is withdrawn from the spool and twisted ittends to lag behind the spool due to air friction and ballooning. When,however, the spool is being slowed down to a stop the yarn has thetendency to continue to rotate and to overrun the spool. Suchoverrunning tends to loosen additional lengths of yarn and cause thetwist to back up to form corkscrews. By frictionally restraining theflier so that it rotates at about the speed of the spool, except atmaximum spool speeds, the tension in the yarn will continue to remainsubstantially constant when the spool is stopped and thus avoid niakingloose yarn and corkscrews."

The advantages of the flier will be more thoroughly explained in thefollowing description, and the accompanying drawing where:

Figure 1 represents the flier of this invention mounted inpositionrelative to a spool of yarn;

Figure 2 represents a section elevation of the flier body showing thebraking means;

Figure 3 is a plan view of the flier; and

Figures 4, 5 and 6 show an adjusting means for adjusting the compressionof the flier spring brake.

Referring to the drawings there is shown in Fig. 1 a spool l0 containingyarn ll which is being withdrawn during a twisting operation. The spoolI0 is mounted on a spindle I2 to rotate therewith. On the spindle l2 andabove the spool there is positioned a flier IS. The flier I5 isfrictionally forced on the spindle l2 to a predetermined depth; and itis adapted to rotate at speeds substantially equivalent to the spindleI2, or the spool 10. Yarn H, after being taken off the spool 40, ispassed through a flier eye It. In being withdrawn from the rotatingspool I 0 the yarn ll tends to balloon out due to centrifugal action.There is created, as a result, a substantial increase in tension andalso a lag in the yarn which tends to prevent the flier from rotatingwith the spool. When the tension in the yarn approaches a certain valuethe force exerted by the compression sprin 24 is overcome to permit theflier to slip and rotate at a rate slower than that of the spool.

The flier is more specifically shown in Figure 2. As there shown thecentral body portion l'l supports the oppositely positioned flier armsl8 and I9 which have eyes H5 at their ends for the passage of yarn. Theflier body I1 is apertured and has therein a supporting core or sleeve2| to which it is fixed. Within sleeve 2| there is an inner andelongated sleeve 22 which is of such diameter as to enable the sleeve 22to flt snugly over the spindle 2. The sleeve 22, by being rrictionallybound to the spindle |2, is adapted to rotate with it while the core 2|is adapted to rotate about sleeve 22.

An expansion spring 24 is positioned about the sleeve 22 to exertpressure through an intervening washer 21 on a flanged end 25 of thesleeve 22 and on one end of the core or sleeve 2|. The end 25 of thesleeve 22 extending through the flier core is, also, desirably flanged.Thus the expanding spring 24 is adapted to frictionally restrain therotation of the flier supporting core 2| when it is mounted on thespindle |2. The compression of the spring 24 is, further, of such forceso as to restrain the flier from rotation only until certain tensionsare developed in the yarn The force exerted by the spring 24 on theflier core 2| can be desirably adjusted by varying the compressibilityof the spring. Such an adjusting means is shown in Figures 4, and 6. InFigure 4 there is shown one type ofan adjusting means which consists ofsubstantially U-shaped, crimping washers 28 which are adapted to be inserted between the lower flange 25 of the sleeve 22 and the compressionspring 24. The compression of the spring 24 can thus be varied by thenumber of washers 28 used.

Another form of adjustment is shown in Figure 5. The sleeve 22 can havethreads 3| cut on its surface to enable the use of adjusting nuts 29 and30. The adjusting nut 29 can be drawn up to give any desirablecompression and the second nut can then look the first in such adjustedposition. v

There is thus provided a flier which is adapted to rotate at desirablespeeds relative to the spool dependent upon the tension developed in theyarn being taken off such a. rotating spool. The integrated brakecomprising part of the flier construction and is, therefore, not adaptedto contact any part of the spool.

We claim:

1. A flier for spinning and twisting machines comprising, a centrallyapertured body member having oppositely disposed flier arms, a coremember in said aperture for supporting said body member, a sleeve havingan internal diameter so as to be frictionally positioned about a spindlein said core member, said core member having a diameter greater thansaid sleeve and being adapted to rotate about said sleeve, an expansiblemeans positioned about said sleeve for exerting pressure against saidcore member, means at each end of said sleeve for retaining said coremember and said expansible means on said sleeve, and means forregulating the pressure of said expansible means on said core member.

2. A flier for spinning and twisting machines comprising, a centrallyapertured body member having oppositely disposed flier arms, a coremember in said aperture for supporting said body member, a sleeve havingan internal diameter as to be'frictionally positioned about a spindle insaid core, said core member having a diameter greater than said sleeveand being adapted to rotate about said sleeve, an expansible meanspositioned about said sleeve abutting said core member and said sleeve,means at each end of said sleeve for retaining said core member and saidexpansible means on said sleeve, and means for regulating the pressureof said expansible means, said regulating means being substantially U-shaped washers being adapted for insertion between one end of saidexpansible means and said sleeve.

3. A flier for spinning and twisting machines comprising, a centrallyapertured body member having oppositely disposed flier arms, a coremember in said aperture for supporting said body member, a sleeve havingan internal diameter so as to be frictionally positioned about a spindlein said core, said core member having a diameter greater than saidsleeve and being adapted to rotate about said sleeve, an expansiblemeans positioned about said sleeve abutting said core member, means ateach end of said sleeve for retaining said core member and saidexpansible means on said sleeve, and means for regulating the pressureof said expansible means on said core member, said regulating meansbeing an adjusting threaded member adapted to be threaded on said sleeveto a predetermined position, and means for locking said threaded memberin such position.

MICHAEL KOCSUTA. THOMAS S. MAYNER.

REFERENCES crrun The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 2,132,462 Dickie et aL Oct. 11,1938 2,365,660 Winslow Dec. 19, 1944 2,371,939 Winslow Mar. 20, 1945

